WO2009049464A1 - Brise-lames - Google Patents

Brise-lames Download PDF

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Publication number
WO2009049464A1
WO2009049464A1 PCT/CN2008/000700 CN2008000700W WO2009049464A1 WO 2009049464 A1 WO2009049464 A1 WO 2009049464A1 CN 2008000700 W CN2008000700 W CN 2008000700W WO 2009049464 A1 WO2009049464 A1 WO 2009049464A1
Authority
WO
WIPO (PCT)
Prior art keywords
tsunami
levee
curved
harbor
ocean
Prior art date
Application number
PCT/CN2008/000700
Other languages
English (en)
Chinese (zh)
Inventor
Gushi Luo
Lijuan Luo
Original Assignee
Gushi Luo
Lijuan Luo
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Gushi Luo, Lijuan Luo filed Critical Gushi Luo
Priority to EP08733913A priority Critical patent/EP2206835A1/fr
Priority to US12/738,136 priority patent/US20100215435A1/en
Priority to CA2702816A priority patent/CA2702816A1/fr
Priority to AU2008314429A priority patent/AU2008314429A1/en
Priority to JP2010529212A priority patent/JP2011500998A/ja
Publication of WO2009049464A1 publication Critical patent/WO2009049464A1/fr

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
    • E02B3/04—Structures or apparatus for, or methods of, protecting banks, coasts, or harbours
    • E02B3/06—Moles; Piers; Quays; Quay walls; Groynes; Breakwaters ; Wave dissipating walls; Quay equipment
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A10/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE at coastal zones; at river basins
    • Y02A10/11—Hard structures, e.g. dams, dykes or breakwaters

Definitions

  • the invention relates to a tsunami protection levee capable of effectively resisting tsunami, storm surge or wave attack. Background technique
  • the cause of the tsunami usually comes from the seabed, such as submarine earthquakes, volcanic eruptions or submarine movements. If there is a meteorite falling into the sea, it will cause a tsunami. The tsunami occurs once a year on average, causing great losses to civilization.
  • the tsunami flow rate is consistent. From the sea surface to the sea floor, the flow rate of the tsunami is almost the same. When it spreads to the coast, the flow rate of seawater is very high (if the wave height is 10m and the flow velocity is also about 10m/s), it suddenly forms a "water wall", accompanied by a rumble, rushing to the coast, it can Breaking the embankment poses a serious threat to human life and property.
  • the tsunami wave swept the western Pacific islands at a speed of 700km/h. In just 14 hours, it reached the Hawaiian Islands of the United States. When arriving at the Hawaiian Islands, the waves were as high as 9 to 10 meters. The waves destroyed the breakwaters on the west coast of the Hawaiian Islands, and washed down a large number of trees, telephone poles, houses, and buildings along the embankments, flooding large areas of land.
  • the tsunami wave has completed about 17,000km and reached the Japanese archipelago on the other side of the Pacific Ocean.
  • the waves are still very turbulent, the waves are as high as 6 ⁇ 8m, and the maximum waves are as high as 8.1m.
  • the rolling waves are raging on the coastal cities of the Japanese islands.
  • the vessels that parked in the harbor, the harbors along the coast, and various construction facilities were greatly damaged.
  • Cities, villages and some houses along the Pacific coast, as well as some people who have not yet escaped, are caught in the sea by this sudden wave.
  • the water flooded the mountains, the choppy, the embankments, houses, trees, buildings, etc.
  • the Chilean tsunami also affected the former Soviet Union on the Pacific coast. Near the Kamchatka Peninsula and Sakhalin Island, the tsunami wave surged to about 6 to 7 meters, causing damage and casualties to houses, boats, docks and personnel along the coast. In the vicinity of the Philippine Islands, the huge waves affected by the Chilean tsunami are also as high as 7 ⁇ 8m, and the coastal cities and rural residents have also suffered bad luck.
  • the table below shows the Indian Ocean tsunami wave arrival time and death toll statistics.
  • the storm surge is a serious natural disaster that occurs along the coast of the ocean.
  • the storm surge also known as the "meteorological tsunami” or “storm tsunami” refers to the abnormal rise and fall of the sea caused by dramatic changes in wind or air pressure. Sometimes, it comes with a typhoon or cold wave, especially when the storm surge occurs and the astronomical tide is superimposed, it is easy to cause extraordinarily increased water.
  • the Chinese patent specification CN1258784A discloses a novel anti-collapse dam, which is characterized in that a ripstop flood control layer and a sandstone layer are installed on the river side of the dam, and the dam has a certain effect on preventing collapse and increases the flood control capacity of the dam.
  • 3 ⁇ 4 it has the structural characteristics of a general dam. From the appearance, it consists of an inclined surface facing the ocean and a bottom surface connected to the ground. From its cross section, it is a narrow bottom and a wide bottom. The trapezoid.
  • Such a trapezoidal protective levee has a static protective effect on the gradually rising seawater; however, when a huge wave such as a tsunami strikes, the seawater ripples with great horizontal velocity and impact force to the bank, trapezoidal section
  • the protective levee exposes the following two weaknesses: First, when the tsunami waves hit the coastal protection levees, the force of the mountains and the seas will instantly act on the protective levees, so that the entire surface of the levee in the sea direction will be subjected to the huge impact of the waves at almost the same time, which is easy to ruin the embankment. accident.
  • the Chinese patent specification CN1804224 discloses a method for preventing a tsunami, which is a method for relieving the tsunami impulse, which is based on the prevention of the construction of a levee by cement on the existing coast, and is characterized by being made of a synthetic material.
  • the large water bag wall is placed in the sea water 50 to 80 meters away from the beach. It is composed of a ⁇ ⁇ net to form an anti-tsunami wall. It is made of synthetic material to make a large water bag, and the upper half is the air bag on the water surface. In the lower half of the water, the part floating on the sea can be designed into various kinds of landscapes such as animals, plants, figures, and art.
  • the traction rope springs reduce the cushioning force, and the above devices are fixed under the sea with metal inverted forks.
  • This method of preventing tsunami has a certain effect on mitigating the impact of the waves on small waves; but for larger waves like the tsunami, the impact of the waves is huge, relying on "fixing with metal forks"
  • the traction rope spring under the sea slows down the impact force. It is powerless. That is, the huge waves caused by the tsunami will undoubtedly destroy the anti-tsunami wall made up of large water bags floating on the sea. Moreover, such an anti-tsunami wall composed of a large water bag has disadvantages that are difficult to maintain and difficult to maintain after construction. Summary of the invention
  • the present invention also provides a method of protecting a harbor with a tsunami protection levee to protect a vessel parked in a harbor from a tsunami attack.
  • the tsunami barrier of the present invention has a special shape.
  • the side of the protection levee facing the ocean is a curved surface. Viewed from the cross section, it is a curved trapezoid with a narrow upper bottom, a wide bottom, and a curve facing the ocean.
  • the curved trapezoid is close to the coast. As the lowest point, the vicinity of the point is relatively flat. From the lowest point to the vicinity of the protective levee, the curve gradually bends upward, its bending radius gradually decreases, and the center of curvature gradually decreases.
  • the position has been lowered below the height of the protective levee, and the curve thereafter is a vertical or slightly inclined curve or straight line extending up to the top surface of the dam; the curved edge of the curved side is shaped like a piece
  • the parabola that is concave upwards. This parabola indicates the surface of the tsunami barrier that faces the ocean side in a parabolic shape.
  • the levee has appropriate height, width, section shape and building strength.
  • the upper top surface of the dyke can be used as a highway, a sidewalk or a viewing platform. Trees can be planted, planted, and planted on the top and back of the dyke.
  • the garden art has been cultivated as a protective levee that can effectively resist the tsunami attack. It is also a peaceful, beautiful and beautiful coastal city landscape.
  • the method for protecting a harbor by using the tsunami barrier of the present invention is: constructing a tsunami barrier at the entrance of the harbor according to an appropriate terrain or shape of the coast, the barrier being built on the coast and extending into the seawater at the entrance of the harbor;
  • the levee did not completely close the inlet waters of the harbor, but vacated an unconnected sea area as a passage for the ship to sail.
  • the harbor constructed in this way can not only facilitate the navigation of ships into and out of the harbor, but also reduce the passage of waves into and out of the harbor by using the tsunami protection levees, which greatly weakens the impact force of the tsunami waves and makes the vessels parked in the harbor free. Attacked by the tsunami.
  • the tsunami protection levee is provided with a parabolic curved surface facing the ocean side, when the tsunami occurs, the waves carrying the great force rush toward the shore, and the first contact of the surf front is the lowest surface near the shore. Position, then the front end of the wave gradually bends upward along the shape of the curved surface. At the same time, the huge impact force of the sea wave is transmitted to the foundation of the protective levee along the normal direction of the curved surface. After the foundation receives a huge impact force, the reaction force is taken from the ground.
  • the surface is transmitted back to the waves, causing the waves to continue to move along the tangential direction of the surface, because the reaction force of the surface of the levee gradually changes the direction of movement of the waves, causing the waves to initially rush toward the shore, and finally along the tangential direction of the surface. It rushes vertically into the sky, and the seawater that falls back vertically and slams down also has an inhibitory effect on the impact of the waves.
  • the tsunami protection levee of the present invention has the following two significant advantages: First, when the tsunami wave directly hits the levee, the force of the levee is gradually weakened by the surface of the levee, so that the wave impacts the bank The way from the instantaneous impact to the gradual impact, the impact of the waves is greatly reduced, and accordingly, the protective dyke is balanced and the ability to withstand the damage of the waves is improved.
  • Figure 1 is a cross-sectional view of a prior art shielded dike along a transverse cross section 5.
  • Figure 2 is a cross-sectional view of the tsunami barrier of the present invention along a cross section
  • Figure 3 is a projection of a harbor protected by a tsunami barrier.
  • Figure 4 is a photograph of a dyke model used to simulate a sea wave impact test.
  • Figure 5 is a photograph of a simulated test in which the waves overburden over the protective dyke of the prior art.
  • Fig. 6 is a photograph of the sea wave as it is guided toward the sky along the curved surface of the tsunami barrier of the present invention in the simulation test.
  • a cross-sectional view of the prior art shield along the cross section is shown in Fig. 1.
  • the cross section of the protective levee shown in the figure is a trapezoidal ABCD with a narrow upper base BC, a lower lower AD width, and a side AB facing the ocean H.
  • the oblique side AB indicates that the prior art protective levee is inclined to the ocean side. The plane.
  • Figure 2 is a cross-sectional view of the tsunami barrier of the present invention taken along a cross section.
  • the protective levee is a curved trapezoidal ABCDEFG with a curved upper EF narrow, a lower base AG wide, and a side ABCDE facing the ocean H.
  • the curved trapezoid is the lowest point at the position A near the coast. The vicinity of point A is relatively flat. From point A to direction B, C, D..., the curve gradually bends, its bending radius gradually decreases, and its center of curvature gradually decreases.
  • Figure 3 is a projection of a harbor protected by a tsunami barrier.
  • the harbor is a three-party land-based, bag-like harbor facing the ocean.
  • the tsunami protection levees CBA and FED are built at the entrance of the harbor.
  • the CB and FE sections of the levee are built on the coast, BA.
  • the ED section extends into the seawater at the entrance to the harbor.
  • the sea area between the A and D that is not connected to the levee is the passage for the vessel to sail.
  • the arrows in the figure indicate the direction of passage of the vessel into and out of the harbor.
  • Fig. 4 is a levee model for simulating a wave impact test:
  • the present invention produced a test dam model.
  • the left side of the model is the curved shape of the tsunami protection levee of the invention, and the right side is formed into the inclined plane shape of the protection levee in the prior art; the left and right sides of the levee model have the same height, and the simulated waves rush to the left or right of the model respectively. At the same time, it can show the different effects of the two types of barriers. .
  • the present invention uses a water pump to inject a water stream to simulate the effect of a wave impacting a levee.
  • the flow rate of the jet stream is 360 liters per minute and the flow rate is 10 meters per second.
  • Figure 5 is a photograph of a simulated sea wave impact and crossing a protective levee when the sea wave simulated by the jet water flow impacts the prior art. See from the photo: The simulated sea wave easily passes over the protective levee. There are technical barriers that are powerless for waves with large lateral speeds.
  • Figure 6 is a schematic view of the flow velocity of the jet flow at the same flow rate as in Figure 5, when the simulated sea wave impacts the curved protective surface of the tsunami barrier of the present invention, the horizontally impacted simulated wave gradually changes direction along the curved shape, and the simulated wave finally leaves the protective embankment.
  • the tsunami protection levee is effective for resisting the impact of large lateral waves.

Abstract

La présente invention concerne un brise-lames dans lequel la surface qui fait face à la mer (H) est une surface incurvée qui transforme la section transversale du brise-lames en un trapézoïde avec un bord incurvé (ABCDEFG) qui comprend un bord supérieur plus court (EF), un bord inférieur plus long (AG), et un bord incurvé (ABCDE) sur le côté de la mer (H). Le profil de courbe est similaire à une parabole inclinée concave vers le haut.
PCT/CN2008/000700 2007-10-19 2008-04-07 Brise-lames WO2009049464A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP08733913A EP2206835A1 (fr) 2007-10-19 2008-04-07 Brise-lames
US12/738,136 US20100215435A1 (en) 2007-10-19 2008-04-07 Breakwater
CA2702816A CA2702816A1 (fr) 2007-10-19 2008-04-07 Brise-lames
AU2008314429A AU2008314429A1 (en) 2007-10-19 2008-04-07 Breakwater
JP2010529212A JP2011500998A (ja) 2007-10-19 2008-04-07 防護堤

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN2007101650079A CN101144266B (zh) 2007-10-19 2007-10-19 一种海啸防护堤
CN200710165007.9 2007-10-19

Publications (1)

Publication Number Publication Date
WO2009049464A1 true WO2009049464A1 (fr) 2009-04-23

Family

ID=39206980

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2008/000700 WO2009049464A1 (fr) 2007-10-19 2008-04-07 Brise-lames

Country Status (7)

Country Link
US (1) US20100215435A1 (fr)
EP (1) EP2206835A1 (fr)
JP (1) JP2011500998A (fr)
CN (1) CN101144266B (fr)
AU (1) AU2008314429A1 (fr)
CA (1) CA2702816A1 (fr)
WO (1) WO2009049464A1 (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101144266B (zh) * 2007-10-19 2010-06-02 罗固事 一种海啸防护堤
JP2012233381A (ja) * 2011-04-27 2012-11-29 Motohiro Okada 津波用防波堤。
EP2667366B1 (fr) 2012-05-25 2017-10-04 The Boeing Company Détection et résolution de conflits au moyen de trajectoires d'avion prévues
EP2667364B1 (fr) 2012-05-25 2017-11-08 The Boeing Company Détection et résolution de conflits au moyen de trajectoires d'avion prévues
EP2667367B1 (fr) 2012-05-25 2017-10-04 The Boeing Company Détection et résolution de conflits au moyen de trajectoires d'avion prévues
EP2667365B1 (fr) * 2012-05-25 2018-03-07 The Boeing Company Détection et résolution de conflits au moyen de trajectoires d'avion prévues
CN104895007B (zh) * 2015-05-19 2017-03-29 浙江大学 一种呈双变量正态曲面形态的丁坝
US9850633B1 (en) 2016-08-30 2017-12-26 Sergey Sharapov Method and structure for dampening tsunami waves
CN106621545A (zh) * 2016-11-29 2017-05-10 欧阳国建 沉淀式阻垢滤芯
JP6749571B2 (ja) * 2016-12-24 2020-09-02 有限会社メイアイ 津波減衰溝構造体
CN109457676B (zh) * 2018-11-28 2021-05-25 重庆交通大学 应对未来海平面上涨和抗潮啸的环形城镇建筑体系

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EDITED BY HUANG JIANMIN AND XU ZHIHUA: ""Climate Change and Natural Disa,ster"", December 2005, METEOROLOGICAL PRESS, BEIJING

Also Published As

Publication number Publication date
US20100215435A1 (en) 2010-08-26
CA2702816A1 (fr) 2009-04-23
AU2008314429A1 (en) 2009-04-23
CN101144266B (zh) 2010-06-02
CN101144266A (zh) 2008-03-19
EP2206835A1 (fr) 2010-07-14
JP2011500998A (ja) 2011-01-06

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